This Alien Planet Has Rock Clouds That Vaporize Before Sunset

JWST observations of hot Jupiter WASP-94A b reveal a daily cloud cycle in its atmosphere.

The planet’s morning side appears cloudy with magnesium silicate clouds, while the evening side is much clearer.

Scientists think the clouds either sink into hotter layers or evaporate on the dayside.

The finding offers one of the clearest looks yet at how exoplanet clouds form, move, and disappear.